又云四无色定(梵名四空处之各名加Dhyāna),十二门禪中之四禪也。一空无边处定,行人厌患色笼如牢如狱,心欲出离之,捨色想而缘无边之虚空心,与空无边相应,故名空无边定。二识无边处定,行人更厌前外之空,捨其虚空缘内识為心识无边之解,心与识无边相应,故名识无边处定。叁无...